Car-truck.



A. P. H. HEAD.

GAR TRUCK.

APPLICATION FILED sEPT.23,1913.

LMQTSL Patented Aug. 18, 19M.

@ was@ Mio/a vlo iran srarns Para r ARTHUR F. H. HEAD, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR-.TO THE J'. Gr.

BRILL C0., OF PHLADELPHIA, PENNSYLVAN, A CORPORATION OF PENNSYL- VANI..

CAR-TRUCK.

Memor.

Specification of Letters Patent.

Application led September 23,1913. Serial No. 791,278.

To all whom 'it may concern:

Be it known that I, ARTHUR F. H. HEAD, a subject of the King of Great Britain, and resident of Philadelphia, in the county of Philadelphia and State of Pennsylvania, and whose post-office address is Careof The J. G. Brill Co., Sixty-second street and Woodland avenue, in said city, have invented certain new. and useful Improvements in Car-Trucks, of which the following is a specification.

My invention relates to improvements in swing bolster car trucks, andparticularly to that class wherein semi-elliptical or leaf springs or other equivalent formy of bolster supports are carried from the'side frames of the truck by swinging links or hangers, and in which .the bolster is supported on said leaf springs, etc., by other springs.

My present invention consists in certain details of construction vand combination of parts hereinafter described, and finally pointed out in the claims.

In the drawing, forming part of this specification, Figure `1 is a side elevation showing a portion of the side frame of a car truck and the improved construction supported therefrom; Fig. 2 is an enlarged elevation of a fragment of the truck, partly in section, 011 the line 2-2 of Fig. 1; and Fig. 3 is a like view partly in section on the line 3-3 of Fig. 2.

Similar reference characters designate like parts throughout the several views.

For the purpose of describing my invent-ion, l have not deemed it necessary to illustrate an entire truck construction, as those skilled in the art are familiar therewith. However', for the purposeof further illus tration, reference is made to the truck shown in the application filed by Walter S. Adams, on the 18th da `of June, 1913, Ser. No. 774,286, Patent o. 1,076,009, dated October 14, 1913.

In the drawing, 1 is an intermediate por-y tion of the side bar or upper chord of the car truck frame. This is usually provided with pedestals of conventional or desired construction. It will be understood that all of the parts lhereinafter described, except the bolster and spring plank are duplicated at each side of the truck, the pedestals engaging axle boxes, which hold axles and wheels in the usual manner. rl`he side bars or upper chords are connected transversely' by the usual t-ransoms 2 shown in dotted lines 1n Fig. 1,' and other crossings in the usual manner.

At 3 are hangers comprising the side bars 4, 5, which are slightly splayed outwardly, lower sections 6, 7, provided with upturned ends 8, 9, andupper curved portions 10. The hangers 3 embrace the side bar 1 and the curved portion 10 rests on bearings 11 which allow the hangers to swing trans-y versely of the truck. rllhe ends 8 and 9 of the hangers support blocks or spring seats l2. At 13 is a semi-elliptic leaf spring, which, in the present case, is arched upwardly, its ends being provided with projections lil-'engaging the spring seats 12. As above stated, it will be understood that there are two of such springs, one on each side of the truck and disposed longitudinally below the plane of the side bars. At 15 is the spring plank, consisting of a channel bar having a lower horizontal web'16 and upright flanges 17, the upright flanges being gradually reduced in heightin order to clear the side bar, as shown at 18,'in Fig. 2. The semi-elliptic spring 13 is provided with the usual form of strap '19 and at 20 is a block provided with a recess, in which the strap is seated, .and at 21 is a like block, in

which the upper portion of the strap 18 is seated, the horizontal web 1G of the spring plank resting on the block'21. Bolts 22 pass through the plates 20, 21, and the lower web of the 'spring plank and secure them firmly together. yln this manner,the leaf springs and hangers onboth sides of the truck are connected transversely.

At 23 is the' bolster, which consists of a channel beam having a horizontally dis posed web 24 and pendant side flanges 25, the beam being wider than the spring plank and inverted, so that its side flanges depend about and embrace the side flanges 17 of the spring plank, sufficient clearance being allowed between the respective anges for a working fit. The side flanges 25 are also preferably reduced in diameter at their ends, as at 26, the ends of the top webL 24: preferably terminating a short distancewithin the side bars and adjacent the end of the reduced portions 18 of the spring plank. At

`27 is a casting resting on the web 24 of the bolster, and which in turn supports the side bearings or rub plates 28. At 29 are spring seats secured by a bolt30 to the lower web' 16 of the spring plank and at 31 is a spring seat secured to the web 24C of the bolster, a bolt 32 passing through the casting 27, web 24 and spring seat 31, securing those parts together. Between the spring seats 29 and 31 extends a spiral spring 33. A compact structure is thus produced and in addition, the bolster is supported on the longitudi vnally disposed leaf spring by further springs disposed within the plane of the side bars and the leaf springs. The leaf spring and spiral spring have different rhythmic movements and tend to more perfectly support the car body while the hangers allow a limited amount of transverse swing.

Vithin the scope of the appended claims, my invention may be variously embodied without departing from its spirit.

Having described my invention, I claim:

1. In a car truck, the combination with the side bars of the truck frame, longitudinally disposed semi-elliptic springs movably hung from the side bars, 'a spring plank transversely connecting the leaf springs, the said connection and suspension enabling the springs and plank to swing bodily transversely of the truck, springs on the spring plank, a bolster on said springs, and transoms connecting the said bars between which the said Abolster lies.

2. ln a car truck, the combination with the side bars 0f the truck frame, leaf springs movably supported on the side bars, a spring plank connecting the said leaf springs, up-

wardly extending spiral springs on the spring plank, a bolster on said spiral 'springs and transoms extending between the sai bars jand between which the said bolster lies.

3. In a car truck, the combination with the side bars of the truck frame, longitudinally disposed leaf springs, swing hangers supporting the leaf springs from the'side bars transoms connecting the side bars, a spring plank secured to the leaf springs, springs on the spring plank-within and adjacent the side bars, a bolster located between the transoms and having its ends eX- tending adjacent the side bars and resting on the said latter springs.

4. In a car truck, the combination with the side bars of the truck frame, llongitudinally disposed leaf springs supported on the side bars, a spring plank comprising a U- shaped channel bar, transoms extending between the said bars, a'bolster comprising an inverted channel beam embracing the spring plank, spring seats within the channels of the spring plank and bolster and springs eX- tending between said spring seats.

Signed at the city and county of Philadelphia, State of Pennsylvania, this-16th day of August, 1913; v

ARTHUR F. H. HEAD. 

